On lit tout et n'importe quoi sur Facebook essentiellement par des personnes qui ne roulent pas dans la catégorie... Alors il est temps de remettre les choses dans l'ordre.
Lors du dernier euro
1/12, 2 pilotes stock utilisant des R1Wurks V21 13.5 ont été disqualifiés pour
cause de moteur non-conforme.
R1 wurks s'est excusé auprès de ces pilotes et de ses clients (cf plus bas le communiqué). Ils affirment que tous les moteurs ne sont pas affectés mais seulement certaines séries. R1 Wurks recommande à tous les pilotes qui doivent participer à des compétitions qui appliquent les règles EFRA/BRCA de ne pas utiliser les moteur V21 dans ces compétitions tant que le problème n'est pas résolu.
Les moteurs R1 wurks
ont été retirés des listes EFRA et BRCA.
Le 22/06 une
nouvelle version du V21 : le V21S a été annoncé. On imagine qu'il s'agit de la
version corrigée du moteur.
Mais alors c'est quoi cette cote ?
D'après le règlement
EFRA (cf plus bas pour le règlement complet), l'entrefer du stator doit faire
un minimum 19.3mm. Les Moteurs défaillant font moins de 19.3mm
Ici le moteur que j'ai utilisé lors du dernier CF à Marmagne
--> CONFORME
Il faut savoir
qu'en France, on applique pas la liste EFRA mais les moteurs utilisés en CF doivent respecter les spécifications EFRA. Ce n'est
pas parce que le moteur a été retiré de la liste EFRA qu'on ne peut pas
l'utiliser en France. Il faut en revanche qu'il respecte la cote de 19.3mm
minimum. Je conseille donc à tous à de vérifier cette cote. Ce n'est pas parce
que vous avez un V21 que votre moteur est non conforme pour rouler en CF.
En ce qui concerne les courses de ligue, le règlement FFVRC (cf plus bas) précise que tous les moteurs du momeltn9que ce sont des 13.5 sont autorisés.
En ce qui concerne les courses de ligue, le règlement FFVRC (cf plus bas) précise que tous les moteurs du momeltn9que ce sont des 13.5 sont autorisés.
Et moi je fais quoi avec mon moteur
défaillant?
R1 wurks annonce
vouloir fournir un stator de remplacement à tous les pilotes possédant un
moteur concerné par le défaut en passant pars leur distributeurs locaux.
Vous pouvez
également contacter directement r1wurks à cette adresse : support1@r1wurks.com
Je leur ai écrit j'attends un retour... Mais j'imagine qu'ils ont 2-3 mails à traiter en ces temps de crise.
Communiqué R1Wurks
"We would like to address the stator stack issue
regarding the BRCA/EFRA V21 (not including any ROAR V21 Motors) Motors included
in this issue are BRCA/EFRA 13.5 V21 PN 20006, BRCA/EFRA 17.5 V21 PN 20007
& BRCA/EFRA 21.5 V21 PN 20008. Some of the stator stacks on these motors
are measuring below the 19.3mm limit set by BRCA/EFRA. We have been
investigating the source of this problem for the past week and we have
identified the problem, we are still in the process of identifying what batch
motors are affected since we know that not all the motors are failing. Out of
several R1wurks motors that BRCA/EFRA inspected, including motors inspected for
the recent 1/12 EFRA event there has only been 2 motors that failed the stator
stack height out of multiple R1 motors inspected. We are aware that there could
be more motors that have this issue and this is the reason for this
announcement. We will be sending replacement stators for the motor batch that
we have identified so far and we will make sure that anyone that has been
affected by this issue will have a replacement stator as soon as possible. At
the moment as we are still in the process of deploying this solution, we advise
everyone that has the BRCA/EFRA V21 motors listed above to avoid using the said
motors at BRCA/EFRA sanctioned events until we have the opportunity to correct
this issue. We have directed our factory to expedite this process and as a
precaution we will be re-inspecting the replacement stators as soon as they
arrive here in California. We will be shipping replacement stators to our
distributors. We apologize to everyone affected by this situation, we are
working hard to resolve this problem as soon as possible.
To help everyone understand how this happened, please
read below.
The BRCA/ EFRA V21 motor has experienced some stators
coming loose of the can in the past, to address this the factory added an extra
amount of glue to compensate. Although this solution worked to minimize or
eliminate the loose issue, this in some occasions accumulated glue on the edge
of some stators making some motors impossible to QC and measure properly since
the glue is adding to the stack. This in effect caused the said stators above
to fail inspection.
To address all our other customers, from our
investigation the ROAR (USA) version V21 and JMRCA (JAPAN) line of motors are
not affected by this problem. For anyone that has concerns regarding this
matter, please message us through our Facebook page or email us at
support1@r1wurks.com.
We would also like to sincerely apologize to Jimmy
Maddison and Daniel Booker for their motors that failed, we would like to clear
their names and we would like everyone to know that both motors that failed is
100% the mistake of R1wurks and not the drivers.
Steve Villanueva
R1wurks
R1 Brushless Motor Lab"
Extrait du règlement FFVRC
§2.1
En TOURISME STANDARD 13.5 :
- Moteurs 13.5t minimum.
- En ligue : tous les moteurs 13.5 sont autorisés.
- En course nationale : les moteurs 13.5 doivent respecter les spécifications de l'EFRA Handbook. La liste EFRA est non exhaustive et propose un échantillon de moteurs reconnus conforme aux spécifications EFRA. (voir 6. Annexe)
- Variateur en mode ”Blinky”(1).
Extrait du règlement EFRA
BRUSHLESS MOTORS (05 Size)
FOR ELECTRIC 1/12th & 1/10th SCALE CARS:
All EC and GP events
will clearly state which class of motors to be used. From May 2016, only motors
included on the EFRA Homologation Lists are allowed at EC and GP events in the
1/12th. & 1/10th. Electric Classes.
4.1 EFRA homologate
two types of Brushless Motors -- ‘MODIFIED’ & ‘SPEC.’ (a) For MODIFIED
motors: sensored or sensorless motors are allowed. (b) For ‘SPEC’ Class motors:
only sensored motors are allowed. EFRA Handbook 2019 125
4.2 When the motor
is sensored:- It must use a six position JST ZH connector model number ZHR-6 or
equivalent connector with 6JST part number SZH-002T- P0.5 26-28 AWG contacts or
equivalent. Wire sequence must be as follows:
Pin #1 - Black wire ground potential
Pin #2- Orange wire phase C
Pin #3- White wire phase B
Pin #4 - Green wire Phase A
Pin #5- Blue wire temp control, 10K
thermistor referenced to ground potential
Pin #6- Red wire +5.0 Volts DC +/-10%
Compatible speed
control must use the 6 position JST header part number X-6B-ZR-SMX-TF (Where
the X denotes the style of header), or equivalent. The power connector has to
be clearly marked A, B, C: A for phase A, B for phase B and C for phase C.
ALL MODIFIED & ‘SPEC’
Class Brushless Motors 05 size must comply with the following:
4.3 The motor has to
be rebuildable . Ball bearings are allowed. The motor must be constructed to
allow easy replacement of the; rotor, bearings and front EndBell.
4.4 All motors must
have the original manufacturer’s name or logo permanently marked by the
manufacturer into the end bell or end-plate.
4.5 No hybrid motors
allowed (mixing of parts from different manufacturers), with the exception of
Rotors in Modified Motors only that were approved prior to 01.04.15.
4.6 No
modifications, designs changes or removal of materials are allowed to any
approved motor. Only ‘optional’ parts or rotors detailed on the EFRA Approved
Lists are allowed. Any changes or modifications will require the motor to be
re-submitted for approval.
4.6.1 It is the
competitor’s responsibility to ensure that any motor used at an EFRA sanctioned
event complies with all EFRA rules. If any motor is found to NOT comply with
the EFRA motor rules, any results using such motor will be disqualified,
regardless if the motor is included on the EFRA homologation list. If there is
definitive proof available; that the motor manufacturer supplied a motor (to
the competitor) that does not comply with EFRA rules, then sanctions could be
taken against the specific manufacturer(s).
4.7 Can Assembly
(not including rotor shaft):- Overall maximum/minimum diameter is
36.02mm./34.00mm. measured at whatever point yields the maximum /minimum
dimension, excluding solder tabs or lead wires. Overall maximum/minimum length
is 53.0mm./50.00mm. measured from the mounting face of the motor to the
furthest most point of the end bell/plate, not including solder tabs, lead
wires or original manufacturer’s logo or name. Motor mounting holes must be on
nominal 25.0 to 25.4mm centres.
4.8 If the stator
cannot be easily removed from the assembled motor for technical verification of
sizes or construction, then the Can/Sleeve must have: - (a) Minimum two pairs
of slots or holes (each exposing 3mm of stator ends minimum), in line with the
centre-line of the stator, that will allow measurement of the stator length.
(b) Slots or holes to allow visual appraisal of the laminates used in the
stator. Rule to be applied to any new range of motor starting 01.01.12.
Existing approved motors without these features are not excluded.
4.9 Stator: The
stator must be continuous laminations having the same overall shape, being one
after the other without anything in between. The laminations must be of one
homogeneous material without cut-outs, holes or hollow sections other than for
the three slots of copper coil wires and (if needed) the three grooves for the
screws used to hold the entire assembly together. Stator minimum length 19.30mm,
maximum 21.00mm measured across the metal surfaces of the laminates and not
including any coatings. The faces of the end laminates of the stator must be
free of any coatings or mouldings for 1mm from the outer circumference to allow
direct measurement across the metal faces of the stator ends (to be applied to
any new motor range submitted from 01.03.18). The outer circumference edges of
the end laminates must be complete with no material removed, to allow accurate
measurement. The thickness of the stator laminations is 0.35 +/- 0.05mm. All
laminations must be of the same material.
MODIFIED BRUSHLESS MOTORS -
05 SIZE Specific Requirements & Dimensions.
4.10 Inside diameter
of the stator must accept “plug” gauges of 12.5mm minimum, 16.0mm maximum.
4.11 The winding:
Delta and Y wounded stators are permitted. Only circular (round) pure copper is
permitted. There is no turn limit, but individual Classes may restrict the
number of turns to a specific minimum.
4.12 The Rotor:
Shaft diameter where the pinion gear mounts must be 3.175mm. Only one piece,
two poles Neodymium bonded or sintered, or Ferrite magnetic rotors are
permitted. The rotor will be identified with the manufacturers name or logo and
the unique part number. Applies to all rotors in new motors or new optional
rotors starting from 1st. April 2015 onwards. Magnet: Minimum length 23,0mm.
Maximum 27,0mm. Magnet minimum diameter 12,0mm, maximum 15,5mm. not including
any non-magnetic balancing aids.
‘SPEC’ CLASS BRUSHLESS
MOTORS - 05 SIZE
Specific Requirements & Dimensions.
The following rules have been agreed by various
International organisations. Applicable to motors of :- 21.5T, 17.5T, 13.5T and
10.5T wind limit.
4.13 Only sensored
motors are allowed in the Spec. classes. It is not mandatory that sensored
Speed Controls have to be used, or that the sensor “harness” has to be
connected.
4.14 The Inside
diameter of the stator must accept a “plug gauge” of 14.50 mm +0/- .005
diameter, clearing the stator, plus its windings and the electrical collection
ring at any end of the stator.
4.15 The Winding:
Only three slot (phase) ‘Y’ (star) wound stators are allowed. No delta wound
stators allowed. Only circular (round) pure copper wire permitted. The three
slots of the stator must be wound with:
21.5T Class:- 21.5 turns of - 2 wires at:
0.724 mm. maximum wire dia.
17.5T Class:- 17.5 turns of - 2 wires at:
0.813 mm. maximum wire dia.
13.5T Class:- 13.5 turns of - 2 wires at:
0.724 mm. maximum wire dia.
and
- 2 wires at: 0.574 mm) maximum wire dia.
10.5T Class: - 10.5 turns of - 2 wires at:
0.813 mm. maximum wire dia.
and
- 2 wires at: 0.643 mm) maximum wire dia.
Wire dimensions are
before lacquer coating. The electrical circuit through the windings can only be
from the ends of the wires forming the designated number of turns. NOTE: The
above metric wire diameter sizes are direct equivalents to the nominal AWG sizes
previously shown. (Reference to AWG sizes removed for simplicity). EFRA
Handbook 2019 127
4.16 The Rotor:
Shaft diameter where the pinion gear mounts must be 3.175mm. Only one piece,
two pole Neodymium bonded or sintered, or Ferrite magnetic rotors are
permitted. The rotor will be identified with the manufacturer’s name or logo
and the unique rotor part number. Applies to all rotors in new motors or new
optional rotors from 1st. April 2015 onwards. Magnet length will be 25.00 +/-
1.00mm, not including any non-magnetic balancing aids. Magnet outside diameter
will be 12.20/12.51mm (min./max. with no further tolerance) for the entire
length of the magnet. The shaft outside diameter where the magnet is mounted
will be 7.25mm +/- 0.15mm, with this diameter extending beyond the magnet to
facilitate measurement. From 01.11.2017 only one ‘optional’ rotor will be
allowed for any range of new motor submitted (includes all wind Classes).
Manufacturer to specify the optional rotor.
4.17 All ‘SPEC’
motors must have a unique marking or feature that is difficult to remove
incorporated into the assembled motor to identify the motor is either a 21.5T,
17.5T, 13.5T or 10.5T Spec. Class motor. But motors introduced from 2011
onwards must have the “wind #’’ etched/engraved onto the outer surface of the
motor on a part of the motor that cannot easily be separated from the stator
windings.
source images : REDRC/EFRA/R1wurks/FFVRC